BancFirst, 1616 Elk Street Branch Basic Info Reviews Routing Numbers Map & Direction Name: BancFirst, 1616 Elk Street Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1616 Elk Street Duncan, Oklahoma 73533 Stephens County View other branches Phone: 580-252-1800 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer103002617YN103003632YY103109031YN103113001YN From: To: